Fred gardner



WILLLAM siMPsoN AND ALFRED GARDNER, or. ILronD, ENGLAND.

Letters Patent No. 97,240. Zo-ted November 23, 1869.

IMPROVED MECHANISM FOR CONVRTING- RECIPROCATING MOTION INTO ROTARY MOTION.

The Schedule referred to in these Letters Petent and making part of the saine.

1'0 all to whom it may concern Be it known that we, WILLIAM SIMPSON and AL- FRED GARDNER, both of Ilford, in theconnty of Essex, England, have invented Improvements in the Construction of Engineshl'vorked by Steam or other liotive-Power, and we do hereby declare. that the following'is a full and exact description thereof', reference beinghad to the accompanying drawing, and to the letters'of reference marked thereon.

To enable others skilled in the art to make and'usc our inventiomwe will proceed to describe its construction and operation This invention has for its object a new mode of couverting the reciprocating motion ot' the piston-rod into rotary motion of the main driving-shaft, without the use of a crank, as heretofore.

VDescription of the Drawing-` Figure 1 represents an eleva-tion, drawn to a scale of one inch to a foot, ot' our arrangement, adapted for a twenty-horse-power engine, constructed either-with three piston-rods, working iu a compound cylinder, or one pistou-rod in one cylinder'.

.Figure 2 is an Vedge View of lig. l.

Figure 3 is a section through the line A B of' fig. 1.

At each of the tigures of the drawing, we employ similar letters ot' reference to denote corresponding parts, in so far assuch parts appear or can be Aseen at each of such said figures, respectively.

A B mark two cross-heads, embracing the eccentric plate C, atopposite points of its lreriphery, throughout its rotation.

l) and E are tie and guide-rods, for securing the moss-heads A B at a parallel distance from each other, so as to 'allow the plate C to rotate freely jhetwcen them, without play or shake.

G is the driving-shaft of the engine, on which theI plate Gis keyed or otherwise fixed.

H are the pistou-rods, keyed tothe bosses a, of the I Modus Opcramli.

The pistoii, on its outward stroke, pushes the crosshead A against the plate C, and, in like manner, the cross-headll pushes against'the plate 0,011 the inward stroke of the piston. In both cases, the boss a. andguides 'D and E preserve the direct action of the piston-rod.

\Ve claim, as our invention- "lhe double parallel tie and guide-rods D and E, embracing the circular grooved boss I, upon the axis of the eccentric plate C, or the shaft G, as its equivalent,

in combination ywith the parallel cross-heads A B, arranged to heal' against the periphery of said eccentric i, throughout its revolution, at diametrically opposite points thereof', and with suitable piston-rods or pitmen, ll', connected to said cross-heads, all substantially as herein set forth.

XVM. SIMPSON.

A. GARDNER.

\Vitnesscs:

ALEX; BROWSE, l 85 (h'aceclvm'ch Street, il'. A. MALLYON,5

E. U., Londo/n.. 

